Sawing-machine.



No. 659,475. Patented Oct. 9, 1900. L. J. HANHART.

SAWING MACHINE.

(Application filed June 4, 1900.)

(N ll L) 3 Sheets-Shae! l.

m I Illl M Zzz asses @mfp. W

5A a c we mmms warms co. PNOIO-LITHO. WASHINGTO No. 659,475. I Patentedon. 9, I900.

' L. J. HANHART.

ISAWING MACHINE.

(Application filed. June 4, 1900.) we Model.) 3 sheets+shee 2.

:2 31 F2 -a" *7 hwia J 32 f l- H 40 57 a 3 w w W 4 55 3/ W 52 /5 /5 q/fl o/Z/ 0 I mg; 21 2? U im/{1T2 nflezw 6 w MM.

-No. 659,475. Patented Oct. 9,1900. L. J. HANHART.

SAWING MACHINE.

(Application filed. June 4, 1900.] (No Model.) 3 Sheets-Shunt 3.

II Nirnn TATES ATENT OFFICE.

LOUIS J. HANHART, OF CINCINNATI, :OHIO, ASSIGNOR TO THE J. A. FAY EGANCOMPANY, OF SAME PLACE;

SAWlNG-IVIACHINE.

SPECIFICATION forming part of Letters Ilatent No. 659,475, dated October9, 1900;

Application filed June 4;, 1900. Serial No. 19,048- (No model.) I

[ all whom it may concern:

Be it known that I, LOUIS J. HANHART, a citizen of the United States,residing at Oincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Sawing-Machines, ofwhich the following is a specification.

My invention relates particularly to that class of sawing-machines usedfor ripping IO and edging stock, and has for its object the providing ofnew and convenient means for the manipulation, adjustment, and settingof the parts.

My invention consists in providing a novel,

substantial, and convenient means for supporting and manipulating theouter bearing of the saw arbor or shaft on a machine of this character,so that the same may be easily dropped into a position clear of thesawblades, so as to permit the removal of the lat ter and insure itsbeing returned to proper position with a minimum amount of exertion andcare, in the novel means provided for setting the saw-blades andinsuring accuracy in the cut, and in the parts and in the construction,arrangement, and combinations of parts hereinafter more fully describedand claimed.

In the drawings, Figure l is a plan View of my improved device with themiddle of the feeding-frame containing the usual idler-rolls and sidegages broken away, as these parts are old and will be readily understoodby those skilled in the art, with the in-feeding 5 upper roll alsobroken away and the pulleys on the lower feed-roll shafts shown broken.

Fig. 2 is a side elevation of the saw-supporting part of the frame withthe outer arborbearing bridge-tree also shown in depending position indotted lines. Fig. 3 is a side elevation of the saw-blade-setting andtensionadjusting mechanism, showing only so much of the frame as toindicate its connection therewith. Fig. 4 is a plan detail of the saw- 5blade-shifting guide. Fig. 5 is a side elevation of the same with theswinging part thereof also shown in assumed position in dotted lines.Fig. 6 is a plan detail of the tensionadjusting mechanism for thesaW-blade-shift- 5o ing device. Fig. 7 is a detail in horizontalcross-section of the saw-blade-shifter-locking mechanism. Fig. 8 is aside elevation of the saw-blade-shifter-locking mechanism shown inconnection with the shifter-wheel, the lat ter shown broken. Fig. 9 is adetail showing the movable bearing'and bridge-tree for the saw-wheelarbor in its normal position with relation to its adjacent parts andalso show ing it in assumed position in dotted lines.

A represents the frame, in which a saw ar- 6o bor or shaft B isjournaled in bearings O O, with an outer bearing D also provided in themanner hereinafter described. The saw-arbor has a series of saw-blades Esecured thereto in such manner as to revolve with the arbor to performthe cutting operation, but arranged to slide on the arbor, as by meansof having a hub for the blade with a spline connection'to the arbor, inany ordinary and wellknown manner. The saw-arbor is turned from asuitable source of power by a pulley 1. It also carries a second pulley2, which by means of a belt passing thereunder and over pulleys 3 at onshafts 5 6 operates lower feedingrolls 7, one at each side of thesawarbor, a tightener being provided for the belt, as indicated at 8.Upper feed and pressure rolls 9 10 are hung in housings ll 12, pivotedon a rod 13, the descent of the rolls being limited by having lugs'l ton the hous- 8o ings strike the frame. The upper rolls may be adjustedto height by having ropes or rods take into eyelets 15 in the housings,the housings being suspended by the rods or ropes. The saw-blades in amachine of this character are frequently changed, larger or smallerblades. or blades provided with differently set or swaged teeth beingplaced upon the ar bor to accommodate for different thicknesses orclasses or kinds of stock, it being also nec- 9o essary to frequentlyremove the blades for the purpose of resharpeniug andkindred operations.I provide means for readily allowing this removal and replacement in ahighlyefficient, economical, and simple manner. The saw-guides are firstturned out of the way of the blades in a manner to be hereinafterdescribed, leaving the saw-bladesfree to be readily slipped along thelength of the mandrel to the outer bearing D. The side of the frametoward which the blades are thus slipped is provided with a large,preferably circular, opening 21 to permit the blades being slippedtherethrough. The outer hearing D is mounted on a web or bridge-tree 22,slipping sidewise upon shafts or rods 23 24, upon which the bridge-treeis also secured by means of set-screws 25. The ends of the bridge-treepreferably form bearings 26 27 to take over the rods. One of the rods,as 24, is lengthened, as shown more clearly in Figs. 1 and 9, so thatthe bearing D and bridge-tree may be slipped sidewise until the bearinghas cleared the saw-arbor, as indicated in dotted lines in Fig. 9, andis then permitted to swing downwardly on the rod to vertical position,as indicated in dotted lines in Fig. 2, Where it remains until the sawshave been given attention. In this way the full weight of thebridge-tree and bearing is never supported by the operator or operatorsremoving the saw-blades, but only sufficient exertion is needed to slidethe bridge-tree sidewise on the rods until the bearing clears thesaw-arbor, when it is permitted to drop on the rod to hanging position.A shoulder 28, secured to the end of the rod by a screw 29, prevents theaccidental slipping of the bridge-tree 0d the rod. After the blades havebeen given attention and it is desired to return the bearing thebridge-tree is simply returned to horizontal position by swinging thesame pivotally about the rod until the bearing D and the saw-arbor andthe other end bearing of the bridge-tree and its rod are in line, whenthe bridge-tree is slipped sidewise, no great care being required toconnect the parts, the connections being very easily and convenientlybrought into line, and no great strength or exertion being required tobring the parts to position for connection. After the bridge-tree is inplace the set-screws are screwed up.

The shafts or rods 23 24 preferably extend transversely across themachine-frame, so as to give stability and so that one of them may forma support for the saw-blade guides F F F The guides F F. connect withthe sawblade-adjusting mechanism hereinafter described. The guide Fconnects with a third rigidly-set blade. The guides comprise,preferably, two parts 31 32. The part 31 has a sleeve 33 taking aboutthe shaft, say 23. It extends forwardly and has a finger 34 extend ingupwardly in front of an index-plate 35 to indicate the position of thesaw-blade to the operator standing at the feeding-in end of the machine.The finger 34 takes over and the forward end of the part 31 takes undera transverse guide 36 to guide the part in its transverse sliding and togive it stability.- The part 32 is bifurcated, with the saw-bladearranged to take into the bifurcation. Each prong or side is providedwith a block. 37 for taking against the side of the saw-blade. A bearing38 is provided for the part, upon which it swings about the sleeve 33. Acollar 39 prevents sidewise movement with'relation to the sleeve. -A lug40 on the part 31 takes under the part 32 and limits the descent of thelatter piece. When it is desired toremove the saw-blade, the part 32 isswung on its pivot so as to clear the saw-blade, as indicated in Fig. 5,which permits the blade to he slid upon its shaft past the guide. Thepart 32 has a clamp 41, to which a cord, cable, rope, or the like 42 maybe secured, as in an opening 43. Each movable guide is preferablyprovided with a rope 42, and an opening 44 permits the ropes of anotherguide to pass a given guide. I

The guides are shifted by means of handwheels 46, of which I have showntwo, preferably one for each movable saw-blade. Each hand-wheel connectswith a shaft 47, carrying at its end, adjacent to the saw-blades, asheave or drum 48, to which the ends of the rope 42 are secured. Eachrope forms a loop beginning at the sheave 48, extending about anendsheave 49, mounted on ashaft in lugs 51 on the frame, thenceextending across the frame to another side sheave 52. Intermediate ofthis extension across the frame the guide is attached to the rope in themanner already explained. From the last-named sheave the rope extends tothe sheave 48, to which its other end is fastened. The end sheaves aremounted side by side, the sheaves 49 preferably stationary. Openings 55are left in the frame at each side to accommodate the sheaves. Each ofthe sheaves 52 is mounted in a yoke 56 on a short shaft or pin 57,1.heouter end of the yoke having an adjusting-screw 58 collared thereto,which adjusting-screw takes through an internally-threaded aperture in ayoke 60, attached to the side of the frame opposite the opening 55. Theadjusting-screw takes up all slack and lost motion in the rope andconnected parts, so that the finger may always truly and accuratelyindicate theposition of the saw-blade and that the saw-blade may beaccurately brought to position from the hand-wheel.

The inner side of the hand-wheel is provided with a number of notches orindentations 61, corresponding in distance apart to the markings on theindex-plate-as, for instance, inches. The frame adjacent to thehand-wheel is provided wit-h aplunger 62, adapted to take into thenotches. The plunger takes intoa bearing 63 and has a reduced shank 64,forming a shoulder 65, between which and the bearing a spring 66 takesabout the plunger, forcing the latter outwardly. The end of the reducedshank slides in a gnidewa-y 67. The outer end of the plunger ispreferably conical, as shown at 68, the notches 61 being similarlyshaped. A pin or contactfnce 71 extends from the plunder preferablythrough a slot 72 in the bearing. A trigger or stop 73 is secured to thehearing, as on a pivot 74, and preferably has an inclined face 75 totake against the pin on the plunger, thereby wedging or forcing theplunger into its notch and firmly securing the hand-wheel with relationto the frame and l-he saw-blade with relation to its arbor and theframe.

In setting the saw-blade the trigger or stop is raised so as to allowthe plunger to be forced back and allow the notches in the hand-wheel topass the plunger, and when the the sawblade is set the trigger is thrownagainst the pin and the hand-wheel thereby locked, as previouslyexplained, thereby also looking the saw.

As before stated, the notches in the hand wheel into which the plungertakes register with the markings on the index-plate 35. It is sometimesdifficult to determine the exact position of the finger 34 with relationto the markings on the index-plate from the operators position at thefeeding-in end of the machine, which may be distant ten to twenty feetfrom the index-plate; but when the plunger takes into the notch theoperator knows that the point of the finger registers with the mark onthe index-plate, and the conical end of the plunger being forced intoand locked in the notch takes up any variation there may be between thefinger and mark on the indexplate and locks the saw-blade in its properposition for cutting to exact size.

By means of my improved arrangement when looked all of the parts arefirmly and rigidly secured with relation to each other, with all lostmotion taken up. a

My device is very simple and economical in construction and operation,it has few parts, is very durable and not likely to get out of order,all lost motion is readily taken up, the parts after adjustment arearranged to be securely locked with relation to each other by simplemechanism to present a firmlyunited structure rigid in all its parts,and exceedingly ready and handy in manipulation.

I claim 1. The combination, in a machine of the character described, ofa frame, a saw-arbor mounted therein, a series of saw-blades, slidablysecured to the arbor, an outer bearing for the arbor, a bridge-tree forthe bearing slidable sidewise longitudinally of the arbor, means forsupporting the bridge-tree independent of the arbor with relation to theframe and permitting the sliding sidewise of the bridge tree and theswinging thereof away from the arbor while attached to the frame,substantially as described.

2. The combination, in a machine of the character described, of a frame,a saw-arbor mounted therein, a series of saw-blades, slidably secured tothe arbor, an outer bearing for the arbor, a bridge-tree for the bearingslidable sidewise longitudinally of the arbor, with a stop for thebridge-tree, means for supporting the bridge-tree independent of thearbor with relation to the frame and permitting the sliding sidewise ofthe bridge-tree and the swinging thereof away from the arbor whileattached to the frame, substantially as described.

3. The combinaton, in a machine of the character described, of a frame,a saw-arbor journaled therein, an outer bearing for the arbor, abridge-tree for supporting the bearing, and a rod for supporting thebridge-tree, and constructed and arranged for moving the bearing andbridge-tree sidewise longitudina-lly of the arbor until the bearingclears the arbor and then swingingly lowering the bearing on itsbridge-tree while supported by the rod, and means for fastening thebearing and bridge-tree in operative position, substantially asdescribed.

4. The combination, in a machine of the character described, of a frame,a saw-arbor, a saw-blade slidably supported by the arbor and turningtherewith, a guide-piece for the saw, a shifting-shaft for thel same, ahandwheel for the latter, with notch-and-plunger mechanism between thehand wheel and frame, inclined faces between notch and plunger, acontact-face for the plunger, and a stop for the contact-face lockingthe plunger and hand-wheel stationary with relation to the frame and thesaw-blade in position on the arbor, substantially as described.

5. The combination, in a machine of the character described, of asaw-arbor, a sawblade slidably supported by the arbor and turningtherewith, a guide-piece for the saw, a shifting-shaft for the same,afraine in which the same is journaled, a hand-wheel for the shaft, afinger, and an index plate, with notches and a'plunger, a spring for theplunger, inclined faces between the plunger and the notches, acontact-face for the plunger, and a positive lock, having a cam-face,for taking against the contact-face for seating the inclined faces withrelation to each other and thereby relatively centering the finger and amark on the index-plate and locking the saw-blade in its proper positionfor cutting to exact size, substantially as described.

6. The combination, in a machine of the character described, of asaw-arbor, a series of saw-blades slidably supported by the arbor andturning therewith, side contact-pieces for the blades, a finger, anindex-plate, a sawblade-shifting shaft with a sheave therefor, a sheaveto each side of the saw-blades, a rope or similar device taking aboutthe latter sheaves and attached to the former sheave, means foradjusting the position of a side sheave for taking up lost motion, ahandwheel for the feeding-in end of the shiftingshaft, a series ofnotches in the hand-wheel and a plunger for taking into the same, with acontactface for the plunger and a movable stop for the contact-face,constructed and arranged to indicate the position of the saw blade withrelation to a mark on the indexplate and to center and positively lockthe saw-blade in position at that mark, substantially as described.

7. The combination, in a machine of the character described, of a frame,a saw-arbor journaled therein, a series of saw-blades slid- 4 esam ableon the arbor, an outer bearing for the arbor, a bridge-tree for thebearing, a rod on which the bridge-tree is pivotally hung extendinglongitudinally beyond the arbor and arranged for first sliding thebridge-tree sidewise longitudinally of the arbor and then swinginglyaway from the arbor to permit the removal of the saw-blades, sidecontact-faces for the blades, adjusting-shafts for the contact-faces, ahand-wheel for the adjustingshaft, a series of notches in thehand-wheel, a plunger taking into the notches, a contactface for theplunger, a stop for the contactface, and constructed and arranged forrig idly securing the hand-wheel with relation to the frame and thesaw-blade on its arbor by the contact of the stop with the contactfacefor the plunger, substantially as described.

In testimony whereof I have signed my name hereto in the presence of twosubscribing Witnesses.

LOUIS J. HANHART. Witnesses:

PARKE S. JOHNSON, PHILIP W. TOZZER.

